Sync fastapi docs from b5ca1324 on 2025-12-07

tests/test_callable_endpoint.py

@@ -0,0 +1,25 @@
+from functools import partial
+from typing import Optional
+
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+
+def main(some_arg, q: Optional[str] = None):
+    return {"some_arg": some_arg, "q": q}
+
+
+endpoint = partial(main, "foo")
+
+app = FastAPI()
+
+app.get("/")(endpoint)
+
+
+client = TestClient(app)
+
+
+def test_partial():
+    response = client.get("/?q=bar")
+    data = response.json()
+    assert data == {"some_arg": "foo", "q": "bar"}